Pressure applying machine for use in paper box making



June 21, 1960 J. M. MINKOW PRESSURE APPLYING MACHINE FOR USE IN PAPER BOX MAKING Filed May 26. 1958 3 Sheets-Sheet 1 INVENTOR 'JULIZIJ MMJVKa/V ATTORNEYS J. M. MINKOW June 21, 1960 PRESSURE APPLYING MACHINE FOR USE IN PAPER BOX MAKING Filed May 26, 1958 3 Sheets-Sheet 2 INVENTOR MIR K014 ATTORNEYS June 21, 1960 J. M. MINKOW 2,941,452

PRESSURE APPLYING MACHINE FOR USE IN PAPER BOX MAKING Filed May 26. 1958 3 Sheets-Sheet 3 INVENTOR Jizms M/Zmzmr BY WM ATTORNEYS l r 2,941,452 -Pa.tented June 21, 1960 PRESSURE APPLYING MACHINE FOR USE IN PAPER BOX MAKING Julius M. Minkow, Brooklyn, N.Y., assignor to City Paper Box Company, Ltd., Montreal, Canada, a corporation of Canada Filed May 26, 1958, Ser. No. 737,904

1 Claim. (Cl. 93-363) The present invention relates 'to pressure applying machines for use in paper box making, and particularly to machines used for pressing adhesively coated surfaces of a paper box together.

The primary object of the invention -is to provide a pressure applying mechanism for pressing the end panels of a paper box together after the contacting surfaces of the panels have been adhesively-coated'.

. Another object of the invention'is to provide apressure applying machine of the class described above which is power operated and controlled by a disengageable clutch.

A further object of the invention is to provide a pressure applying machine for use in paper box making having a resilient work contacting face to evenly distribute the pressure throughout the work area.

A still further object of the invention is to provide a pressure applying mechanism of the class described above having a stationary pressure applying face and a movable pressure applying face wherein the movable face is guided so as to remain in parallel relation to the stationary face during the pressure applying stroke.

Another object of the invention is to provide a pressure applying machine of the class described above which is inexpensive to manufacture, simple to use, and which is completely efiective in securing the paper box ends together.

Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings, in which:

Figure 1 is a side elevation of the invention, shown partially broken away and in section for convenience of illustration.

Figure 2 is an end elevation of the invention.

Figure 3 is a top plan view of the invention.

Figure 4 is an enlarged fragmentary end elevation, shown partially broken away and in section for convenience of illustration.

Figure 5 is an enlarged fragmentary perspective view of the pressure applying members, shown with a box in position thereon.

Figure 6 is an enlarged fragmentary horizontal section taken along the line 6-6 of Figure 1, looking in the direction of the arrows.

Referring now to the drawings in detail wherein like reference characters indicate like parts throughout the several figures, the reference numeral 10 indicates generally a pressure applying machine for use in paper box making constructed in accordance with the invention.

The machine 10 includes a generally rectangular base 11 supported on a plurality of legs 12. The base 11 is arranged in a horizontal plane and has a pedestal 13 arranged adjacent one side thereof. The pedestal 13 has a horizontal extension 14 integrally secured to the upper end thereof in parallel relation to the base 11. The horizontal portion 14 terminates at a point overlying the opposite end of the base 11 from the pedestal 13 and is supported therefrom by brace members 15, 16.

A shaft 17 is arranged parallel to and adjacent the horizontal portion 14 in underlying relation thereto, and

is supported in the pedestal 13 by a bearing 18, as best seen in Figures 1 and 3. The shaft 17 is supported at its opposite end in a bearing 19-formed in the end of the horizontal portion 14 opposite the pedestal 13.

A flat pulley 20: is mounted on the end of the shaft 17 adjacentthe pedestal 13 and is arranged to be coupled to the shaft 17 by a friction clutch indicated generally at 2 1. A bell crank lever 22 is pivotally mounted to the pedestal 13 by a pivot bolt 23, and has the end 24 thereof; operatively connected to the clutch 21.

A shaft 25 is secured to the end 26 of the bell crank lever 22'and; depends therefrom to a foot treadle (not. shown) so that the bell crank lever 22 can be swung about its;p,ivot-23 to engage the clutch 21 to couple the drive pulley 20 to the--shaft 17.

The shaft 17* at the end thereof adjacent the bearing 19 is provided with an eccentric crank pin 27, as best seen in Figure l; A "connecting rod 28 is journalled at 29 to the crank pin 27 and is arranged in depending relation therefrom.

A slide member'30 is, arranged for vertical sliding movement sa nst epen i g p t 31, x d downwardly from the end of the horizontal portion 14 carrying the bearing 19. A guide plate 33 is secured to the portion 31 by bolts 34 and a second guid'e plate 35 is secured to the portion 32 by bolts 36. The guide plates 33, 35 engage over converging opposite sides 37, 38, respectively, of the slide member 30.

The connecting rod 28 is provided with a crank pin 39 eccentrically secured to a shaft 40 journalled in the lower end of the connecting rod 28 and secured therein by means of a set screw 41 engaging in a groove 42 in the shaft 40. The crank pin 39 can be adjusted by turning the head 43 formed on the outer end of the shaft 40 after the set screw 41 has been loosened to adjust the throw of the slide 30 with respect to the horizontal portion 14.

The slide 30 is provided at its lower end with a semicylindrical outwardly extending horizontal portion 44 having a horizontal flat lower face 45 formed thereon. A generally rectangular base plate 46 is arranged beneath the semi-cylindrical extension 44 in contact with the flat lower face 45 thereof and is secured thereto by cap screws 47, as best shown in Figure 4.

A resilient mat 48 is secured to the lower face of the base plate 46 by a cap screw 49 at each corner thereof.

A support 50 is secured to the base plate 11 and extends upwardly therefrom. An outboard support 51 is welded to the support 50 and extends outwardly therefrom, as best seen in Figure 1.

An anvil 52 is supported intermediate its opposite ends on the support 50 and rests against the outboard support 51, as can be seen in Figure 1. A hold-down yoke 53 engages over the opposite end of the anvil 52 securing it to the base plate 11.

A generally rectangular anvil plate 54 is secured to a flat surface 55 formed on the outer end of the anvil 52 by means of a bolt 56 extending through the outboard support 51 and the anvil 52. The anvil plate 54 is maintained in aligned position on the anvil 52 by means of guide keys 57.

The anvil plate 54 is somewhat narrower than the base plate 46, as can be seen in Figure 4, sothat the resilient pad 48 contacts the anvil plate 54 in a central area spaced inwardly from the cap screws 49.

In the use and operation of the invention, a paper box, indicated in Figure 5 at 58, has adhesive applied to the end panels 59 thereof, and with the panels 59 folded into overlapping engagement, the box 58 is positioned over the anvil plate 54 with the end panels 59 thereof in engagement with the upper face of the anvil plate 54.

The clutch 21 is then operated to rotate the shaft 17 4 I and by means of the crank pin 27 moves the slider 30 vertically downwardly so that the resilient pad 48 contacts the end panels 59 of the box 58 pressing them tightly A pressure applying machine for use in paper boxmaking comprising a base, a pedestal secured to said base and extending upwardly therefrom, a horizontal portion integrally secured to the upper end of said pedestal and extending laterally therefrom overlying said base, a shaft having one end journalled in said pedestal and the opposite end journalled in said horizontal portion, a pulley mounted on the end of said shaft journalled in said pedestal, -a clutch positioned on said shaft for releasably coupling said pulley to said shaft, a horizontally extending anvil, a support fixed to said base engaging said anvil intermediate the opposite ends of said anvil, a hold-down yoke engaged over the inner end of said anvil securing f a stnsa; a p

said anvil to said base, an anvil plate mounted on the outer end of said anvil in outboard relation to said base, a vertical slider having an opening therein, vertical guides depending from said horizontal portion guiding said vertical slider for vertical sliding movement thereon, a crank pin fixed on said shaft, a connecting rod extending between said crank pin and said vertical slider, an eccentric on said connecting rod, a second crank pin carried by said eccentric engaging in said opening in said vertical slider, a rotatable head on said eccentric rotatably connecting said crank pin and said slider for vertical adjustment of said connecting rod relative to said slider and hence said slider relative to said first crank pin, a resilient pressure pad, means securing said resilient pad to the lower end of said vertical slider in overlying parallel relation to said anvil plate, said resilient pressure pad being moved into pressure contact relation with respect to said anvil plate upon rotation of said shaft and vertical sliding movement of said slider.

I References Cited in the file of this patent V UNITED STATES PATENTS 2,089,722 I vergobbi Aug. 10, 1937 23 2,727,443 Watson Dec. 20, 1955 FOREIGN PATENTS 14,245 Great Britain June 18, 1912 

